With a JEE Main rank of 1,98,000 in the OBC category and Bihar as your home state, getting CSE in top colleges like NIT Patna is not possible as the cutoff for CSE is typically around 12,000–20,000 OBC rank. Similarly, chances for CSE in IIITs are also very slim. However, you can still explore alternatives like applying through UGEAC Bihar counselling for state-level colleges, or consider CS-related branches in newer IIITs or NITs, where the cutoff may be higher. Additionally, you can apply to private colleges that accept JEE scores.